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JAMB Chemistry 1994 Question 20

Question 20

Acids, Bases and Salts

A few drops of concentrated HCl are added to about 10 cm3 of a solution of pH 3.4. The pH of the resulting mixture is

  1. A.less than 3.4
  2. B.greater than 3.4
  3. C.unaltered
  4. D.the same as that of pure water
Show the answer and explanation

Answer: A (less than 3.4)

Explanation

Concentrated HCl adds more H+ ions, making the solution more acidic. More acidic means a lower pH.